Answer:
22.13
Step-by-step explanation:
Given that :
Initial quantity = 590
Decay rate = 55% per year
Value of the quantity after 21 months to the nearest hundredth
If decât rate per year = 55%
Monthly rate of Decay = 55% / 12 = 0.0458333
Hence, quantity after 21 months :
Initial amount - (Initial amount * 21(monthly Decay rate))
590 - (590 * 21(0.0458333))
590 - 567.874587
= 22.125413
= 22.13 (nearest hundredth)
